MIPS: Cleanup the forcing of assembly output in error tests.

gcc/testsuite

	* gcc.target/mips/oddspreg-2.c (dg-options): Remove dg-skip-if for
	-fno-fat-lto-objects and add the -ffat-lto-objects option, along with
	an explanation for its purpose.
	* gcc.target/mips/oddspreg-3.c (dg-options): Likewise.
	* gcc.target/mips/oddspreg-6.c (dg-options): Likewise.
	* gcc.target/mips/no-dsp-1.c: Add an explanation for the purpose of
	-ffat-lto-objects.
	* gcc.target/mips/pr54240.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-14.c: Likewise.
	* gcc.target/mips/soft-float-1.c: Likewise.

From-SVN: r243908

gcc/testsuite/ChangeLog

+2016-12-23  Toma Tabacu  <toma.tabacu@imgtec.com>
+
+	* gcc.target/mips/oddspreg-2.c (dg-options): Remove dg-skip-if for
+	-fno-fat-lto-objects and add the -ffat-lto-objects option, along with
+	an explanation for its purpose.
+	* gcc.target/mips/oddspreg-3.c (dg-options): Likewise.
+	* gcc.target/mips/oddspreg-6.c (dg-options): Likewise.
+	* gcc.target/mips/no-dsp-1.c: Add an explanation for the purpose of
+	-ffat-lto-objects.
+	* gcc.target/mips/pr54240.c: Likewise.
+	* gcc.target/mips/r10k-cache-barrier-14.c: Likewise.
+	* gcc.target/mips/soft-float-1.c: Likewise.
+
 2016-12-22  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>
 
 	* gcc.dg/gimplefe-20.c: New test-case.

gcc/testsuite/gcc.target/mips/no-dsp-1.c

 /* { dg-options "-mno-dsp -ffat-lto-objects" } */
+/* This is testing for errors which can only happen in assembly generation.
+   dg-error does not guarantee assembly generation, so we need to do it
+   manually by using -ffat-lto-objects.  */
 
 void
 foo (void)

gcc/testsuite/gcc.target/mips/oddspreg-2.c

 /* Check that we disable odd-numbered single precision registers.  */
-/* { dg-skip-if "needs asm output" { *-*-* } { "-fno-fat-lto-objects" } { "" } } */
-/* { dg-options "-mabi=32 -mno-odd-spreg -mhard-float" } */
+/* { dg-options "-mabi=32 -mno-odd-spreg -mhard-float -ffat-lto-objects" } */
+/* This is testing for errors which can only happen in assembly generation.
+   dg-error does not guarantee assembly generation, so we need to do it
+   manually by using -ffat-lto-objects.  */
 
 NOMIPS16 void
 foo ()

gcc/testsuite/gcc.target/mips/oddspreg-3.c

 /* Check that we disable odd-numbered single precision registers.  */
-/* { dg-skip-if "needs asm output" { *-*-* } { "-fno-fat-lto-objects" } { "" } } */
-/* { dg-options "-mabi=32 -mfp32 -march=loongson3a -mhard-float" } */
+/* { dg-options "-mabi=32 -mfp32 -march=loongson3a -mhard-float -ffat-lto-objects" } */
+/* This is testing for errors which can only happen in assembly generation.
+   dg-error does not guarantee assembly generation, so we need to do it
+   manually by using -ffat-lto-objects.  */
 
 NOMIPS16 void
 foo ()

gcc/testsuite/gcc.target/mips/oddspreg-6.c

 /* Check that we disable odd-numbered single precision registers for FPXX.  */
-/* { dg-skip-if "needs asm output" { *-*-* } { "-fno-fat-lto-objects" } { "" } } */
-/* { dg-options "-mabi=32 -mfpxx -mhard-float" } */
+/* { dg-options "-mabi=32 -mfpxx -mhard-float -ffat-lto-objects" } */
+/* This is testing for errors which can only happen in assembly generation.
+   dg-error does not guarantee assembly generation, so we need to do it
+   manually by using -ffat-lto-objects.  */
 
 NOMIPS16 void
 foo ()

gcc/testsuite/gcc.target/mips/pr54240.c

 /* { dg-do compile } */
 /* { dg-options "-fdump-tree-phiopt-details -ffat-lto-objects isa>=4" } */
 /* { dg-skip-if "code quality test" { *-*-* } { "-O0" "-O1" } { "" } } */
+/* This is testing for errors which can only happen in assembly generation.
+   dg-error does not guarantee assembly generation, so we need to do it
+   manually by using -ffat-lto-objects.  */
 
 typedef struct s {
   int v;

gcc/testsuite/gcc.target/mips/r10k-cache-barrier-14.c

 /* { dg-options "(-mips16) -mr10k-cache-barrier=store -ffat-lto-objects" } */
 
 /* Test that indirect calls are protected.  */
+/* This is testing for errors which can only happen in assembly generation.
+   dg-error does not guarantee assembly generation, so we need to do it
+   manually by using -ffat-lto-objects.  */
 
 MIPS16 void foo (void) { } /* { dg-message "sorry, unimplemented" } */

gcc/testsuite/gcc.target/mips/soft-float-1.c

 /* { dg-options "-msoft-float -ffat-lto-objects" } */
+/* This is testing for errors which can only happen in assembly generation.
+   dg-error does not guarantee assembly generation, so we need to do it
+   manually by using -ffat-lto-objects.  */
 
 void
 foo (void)